JIS G3472 Carbon Steel Tube For Automobile

Release Tme: 2024-09-02

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JIS G3472 Electric resistance welded carbon steel tubes for automobile
Grade: STAM290GA STAM290GB STAM340G STAM40G STAM470G STAM500G STAM440H STAM470H STAM500H STAM540H
Thickness: 2.0-25.0mm Out Diameter: 10.2-660 mm
Length:5.8M/12M.max
Application: Boiler, electricity, mechanical, structural,gas cylinder, chemical, offshore and oil service.
Surface Finishing:Anti-corrosion and high-temperature resistant with black painting.
Packing: Bundles, seaworthy wooden cases.With or without end caps, varnish or as per clients requirements.
Surface Treatment:
Surface Corrosion proofing water based paint

JIS G3472 ERW automobile structure steel tube Chemical Composition Table:

Grade	Chemical Composition %
	C	Si	Mn	P	S
STAM 290GA	0.12 max.	0.35 max.	0.60 max.	0.035 max.	0.035 max.
STAM 290GB
STAM 340G	0.20 max.	0.35 max.	0.60 max.	0.035 max.	0.035 max.
STAM 390G	0.25 max.	0.35 max.	0.30~0.90	0.035 max.	0.035 max.
STAM 440G
STAM 440H
STAM 470G
STAM 470H
STAM 500G	0.30 max.	0.35 max.	0.30~1.00	0.035 max.	0.035 max.
STAM 500H
STAM 540H

JIS G3472 ERW automobile structure steel tube Mechanical Properties Table:

Grade	Designation	Tensile strength (MPa)	Yield Strength (MPa)	Elongation (1)%	Flaring test (2)
				No.11 Test piece No.12 Test piece	Size of the flared bell portion (D: OD)
				Longitudinal direction	Size of the flared bell portion (D: OD)
Grade G	STAM 290GA	290 min.	175 min.	40 min.	1.25 D
	STAM 290GB	290 min.	175 min.	35 min.	1.20 D
	STAM 340G	340 min.	195 min.	35 min.	1.20 D
	STAM 390G	390 min.	235 min.	30 min.	1.20 D
	STAM 440G	440 min.	305 min.	25 min.	1.15 D
	STAM 470G	470 min.	325 min.	22 min.	1.15 D
	STAM 500G	500 min.	355 min.	18 min.	1.15 D
Grade H	STAM 440H	440 min.	355 min.	20 min.	1.15 D
	STAM 470H	470 min.	410 min.	18 min.	1.10 D
	STAM 500H	500 min.	430 min.	16 min.	1.10 D
	STAM 540H	540 min.	480 min.	13 min.	1.05 D

JIS G3472 Automobile Mechanical Tube Dimension Table:

OD (mm)	WT (mm)
OD (mm)	1.0	1.2	1.6	2.0	2.3	2.6	2.8	2.9	3.2	3.4	3.5	4.0	4.5	5.0	6.0
15.9	-	0.435	0.564	0.686	-	-	-	-	-	-	-	-	-	-	-
17.3	-	-	-	0.755	0.851	-	-	-	-	-	-	-	-	-	-
19.1	0.446	0.530	0.690	0.843	0.953	-	-	-	-	-	-	-	-	-	-
22.2	0.523	0.621	0.813	0.996	1.13	-	-	-	-	-	-	-	-	-	-
25.4	-	0.716	0.939	1.15	-	1.50	-	1.61	-	-	-	-	-	-	-
28.6	-	0.811	1.07	1.31	-	1.67	-	-	-	-	-	-	-	-	-
31.8	0.760	0.906	1.19	1.47	1.67	-	-	-	2.26	-	-	-	-	-	-
34.0	-	-	1.28	-	1.80	-	-	-	2.43	-	-	2.97	-	-	-
35.0	-	1.00	1.32	1.63	-	-	2.22	2.32	-	-	-	-	-	-	-
38.1	0.915	1.09	1.44	1.78	2.03	-	-	-	-	-	-	-	-	-	-
42.7	-	1.23	1.62	2.01	2.29	2.57	-	-	3.12	-	3.38	-	-	4.65	-
45.0	1.08	1.30	1.71	2.12	2.42	2.71	-	3.01	3.30	-	-	-	4.49	4.93	5.77
47.6	-	1.37	1.81	-	2.57	-	-	3.20	-	-	-	-	-	-	-
48.6	-	1.40	1.85	2.30	2.63	-	-	3.27	3.58	-	-	-	4.89	5.38	6.30
50.8	-	1.47	1.94	2.41	2.75	3.08	3.31	3.43	-	3.97	4.08	4.63	-	-	6.63
54.0	-	1.56	2.07	-	2.93	3.29	3.54	3.65	-	4.24	4.36	4.95	-	-	-
57.0	-	-	2.19	-	3.10	3.48	3.74	3.87	4.25	4.49	4.62	-	-	-	-
60.5	-	-	2.32	-	3.30	3.71	-	4.12	4.52	-	-	5.59	-	-	-
63.5	-	-	2.44	-	-	3.90	-	-	-	-	-	-	-	-	-
65.0	-	-	2.50	-	-	-	-	-	4.88	-	5.31	-	-	-	-
68.9	-	-	2.66	-	3.78	-	-	-	-	-	-	-	-	-	-
70.0	-	-	2.70	-	-	-	-	-	5.27	-	5.74	-	-	-	-
75.0	-	-	2.90	-	4.12	4.63	-	5.16	5.67	-	-	7.03	-	-	-
80.0	-	-	3.09	-	-	4.96	-	-	6.06	-	-	-	-	-	-
82.6	-	-	-	3.98	4.55	-	-	-	-	-	-	-	-	-	-
90.0	-	-	3.49	-	4.97	5.59	-	-	6.85	-	-	8.51	-	10.5	12.4
94.0	-	-	3.65	-	-	5.86	-	-	7.17	-	-	-	-	-	-
101.6	-	-	-	-	-	-	-	-	-	-	-	9.66	-	11.9	14.1